Carbureter.



H. R. BARRETT & K. M00. WILSON.

OARBURETER.

i APPLIOAITION FILED NOV. 6, 1911. 1,089,524. y Patented Mar. 10, 1914,

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wlnltaw UNITED STATES PETENT oEErcE.

HERBERT RAYMOND BARRETT, OFYSOUTHPORT, AND KENNETH McCLYMONT WILSON, 0F MANCHESTER, ENGLAND, .ASSIGNORS yT0 THE PHOENIX MOTOR COMPANY, OF

ALTRINCHAM, ENGLAND.

CARBUBETER.

Specication of Letters Patent. Application led November 6, 1911. Serial No. 658,867.

To all whom t may concern Be it known that we, HERBERT RAYMOND BARRETT and KENNETH MCCLYMONT WIL- soN, both subjects of the King of Great Britain, residing, respectively, at 29 Park Crescent, Southport, in the county of Lancaster, England, and 15 Regent street, Chorlton-on-Medlock, Manchester, inthe county of Lancaster, England, have invented certain new and useful 'Improvements in or Relating to Carbureters or Vaporizers for lnternal-Combustion Engines, of which the following is a specication.

This invention relates to carbureters or vaporizers for internal combustion engines.

According to this invention, the carbureter or vaporizer is adapted by means of a rotatable choking plate to control the proportions of the fuel and air and to impart a swirling motion to the mixture to effect more perfect vaporization. The oil or fuel jet of the carbureter is associated with a number of tapered air passages and the rotatable choking plate, the desired control being readily effected by the operation of this latter member.

In order that the said invention may be clearly understood and readily carried into effect we will proceed to describe the same with reference to the accompanying drawings in which Eiguresvl and 2 are views in vertical section illustrating a carbureter or vaporizer constructed according to this invention, a portion between the upper and lower ends being removed so as to show the essential parts more clearly. F ig. 2EL is a bottom plan view of the shutter sleeve. Figs. 3 to 5 are views showing three approximate positions of the choking plate on the oil jet and air passages.

The apparatus comprises a chamber a having a port a in communication with the working cylinder, or the combustion chamber pertaining thereto, and adapted for receiving a sleeve or shutter a2 arranged for rotatory movement by means of a handle a or other device, the said handle being provided with vsuitable stops or guides for limit ing its movement in either direction of setting. The sleeve a2 is formed with an aperture at which in a certain position of the sleeve is caused to register with the port a in the chamber a. The fuel is suppliedto the interior of the sleeve or shutter a2, which serves as a mixing chamber for the air and petrol, by means of a jet arranged transversely or diametrically to the chamber a and the sleeve a2, the jet consisting of a plate b havlng a bar b2 arranged across the same and formed with small or suitably proportioned spray holes b3 for the discharge of the petrol .or other hydrocarbon. Upon each Patented Mar. 1o,1914.

side of this bar an opening b4 is provided.

rlhe bar b2 is formed with taper sides b and the openings b4 are also formed with taper or inclined sides or surfaces b and the latter register with similar taper surfaces or passages 67 formed in a base plate c to which the jet plate b and the chamber a are secured by screwed studs or the like. The fuel is admitted to the jet by means of a pipe or passage c conveniently led into the base plate o and the bar b2 of the jet. The sleeve or shutter a2 serves as a means of regulating the port a leading to the engine or the combustion chamber thereof and adjacent to the jet the said sleeve is provided with inwardly directed abutments or bosses o2 between which and the jet a plate c3 is placed same being carried by the sleeve a2 and having an elongated opening 04 therein formed with taper sides c5 which are normally in line with the taper sides b of the apertures o4, b? in the jet plate b and the base plate c. By turning the sleeve a2, the plate c3 by means of the elongated opening o4 therein, has the effect of restricting Ior cutting off the jet apertures b3 and of regulating the air passages b4 constituted by the side apertures in the jet plate b and the base plate c. The` plate c3 is preferably secured to the sleeve a2 by an adjustable securing means, such as the studs c which are adapted to engage with elongated openings or slots in the plate 03 and allow of its adjustment relatively to the sleeve.

The 'jet may be constituted by inserting small perforated plates of brass or other suitable metal or material or by drilling minute holes. The jet may moreover be constructed in sections or in say two portions, the perforations being formed by making fine grooves in the meeting faces of the two parts.

The manner in which the air is supplied to the jet and the construction of the jet, hereinbefore referred to, have the effect of facilitating the use of heavy oils. The manner of choking the air by means of the taper inclined passages and rotatory choking plate c produces a swirling motion in the mixture, tending to more perfect vaporization. The elongated character of the'opening c4 in the air choking device c3 permits of a partial restriction of the air supply with the jet fully .exposed as shown in the dotted position of the opening Fig. 3, or of a full supply of air being admitted to the engine can with the jet in the exposed condition when the opening is in the position shown in full lines in Fig. 3. Approximate positions of the choking device are shown in thedrawing, Fig. 3 showing the position of the delvice when the throttle is open and partially closed, Fig. 4 when the throttle is half closed, and Fig. 5 when the throttle is fully closed.

By means of the herein described improvements a more perfectly variable carbureter is produced than has been heretofore proposed for use with oils or hydrocarbons.

- a swirling motion to the same.

2. A Carbureter or vaporizer for internal combustion engines, comprising in combination, a casing, a .tapered perforated bai, means for conducting the oil to said perforated bar, tapered air passages adjacent the sides of said perforated bar, a rotating sleeve in the casing, and a choking plate carried bv saidv rotating sleeve, said plate perforated bar, a rotating sleeve in the said -casin which-is adapted to serve as a mixing cham er, a port in said sleeve for .controlling the inletto the engine, a choking plate carried by said rotating sleeve, and having an aperture formed with tapered sides.

4. Carbureter or vaporizer for internal combustionengines comprising in combination a casing, a diametrical bar therein, a

fuel jet in said bar, a plurality xof tapered air passages, a rotating sleeve within said casing, and a choking plate adjutably mounted on said sleeve for controlling the proportions of the constituents of the mixture and for imparting a swirling motion Yto the same.

5. Carbureter or vaporizer for internal combustion engines comprising in combination a casing, a tapered perforated bar, means for conducting oil to said perforated bar, tapered air passages adjacent to said perforated bar, a rotating sleeve in the said -easin which is adapted to serve :is a mixing chamier, a port in said sleeve for controlling the inlet to the engine, a choking plate adjustably mounted on said sleeve and having an opening formed with tapered sides. In testimony whereof we afIiX our signatures in presence of two witnesses.

HERBERT RAYMOND BARRETT.. KENNETH MGCLYMONT WILSON. Witnesses:

ARTHUR M. HUNTER, ALBAN NoRMANToN. 

